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(No Model'.) 2 SheetsSheet 1.

S. E. MOWER. ELECTRIC MOTOR MECHANISM.

No. 440,717. Patented Nov. 18, 1890.

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S. E. MOWER. ELECTRIC MOTOR MECHANISM.-

No. 440,717. Patented Nov. 18, 1890.

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UNIT D STATES PATENT OFFICE.

SAMUEL E. MOIVER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO HENRY Gr. THOMPSON & SONS, OF SAME PLACE.

ELECTRlC-MOTOR MECHANISM.

SPECIFICATION forming part of Letters Patent No. 440,717, dated November 18, 1890.

Application filed May 8,1890. Serial No. 351,072. (No model.)

re on whom it may concern.- dotted lines, Fig. 3) to a friction drum or disk Be it known that I, SAMUEL E. MOWER, of W, loose on the said sleeve, the said friction- New Haven, county of New Haven, State of disk being encircled by a friction-strap 6 Connecticut, have invented an Improvement which may be tightened and loosened upon in Electric-Motor Mechanism, of which the the said friction-disk by a rod b which in following description, in connection with the practice may be effected from the platform accompanying drawings, is a specification, of the car. like letters on the drawings representing like The speed-reducing mechanism above departs. scribed is inclosed in an oil and dust tight [O This invention relates to electric-motor drum or case b secured to and supported by 66 mechanism especially adapted to be used on the yoke A, the said drum in practice constreet-railway cars, and is an improvement taining a quantity of oil sufficientto lubricate ,upon the motor mechanism shown and dethe gears.

scribed in another application, Serial No. The motor is provided with the usual com- 15 329,760, filed by me November 9, 1889. mntator (Z and brushes d.

My present invention relates more particu- In operation the armature-sleeve and disk larly to the speed-reducing mechanism, and B fast thereon are revolved continuously, and has for its object to improve the construction it the friction-strap b is not engaged with the of the same. friction-disk Z) the gear I) and the friction- 20 The particular features in which my invendisk 11 will be revolved, and the pinions b will 70 tion consists will be pointed out in the claims travel around the gear Z) without rotating the at the end of this specification. latter and the car-axle will remain stationary.

Figure 1 is a top or plan view of a car-axle If it is desired to start the car, the frictionhaving mounted upon it an electric-motor strap is tightened upon the friction-disk b",

25 mechanism embodying my invention; Fig. 2, and the motion of the said disk and of the a sectional view on the line 50 as, Fig. 1, and gear I) will be retarded, and in proportion as Fig. 3 a sectional view on the line 3 1 Fig. 1. the motion of the friction-disk and the gear The yoke or frame A, supported on the car- I) are retarded the gear 19 fast on the can axle A, provided with wheels A the field axle, will be rotated, and when the frictiono magnets casccured to said yoke, and the armadisk is held stationary the gear b is rotated ture a, secured to or forming part of the at the maximum speed, thereby moving the sleeve a mounted upon the axle A, may be carat a maximum speed. It will thus be seen substantially such as shown and described in that the speed or travel of the car may be conmy application referred'to. trolled by regulating the pressure or bind of 3 5 The sleeve a has secured to it, as by a key the friction strap upon the friction-disk. a (see dotted lines, Figs. 1 and 2,) a disk B, I have herein shown the gear b as engaged provided on its periphery, preferably, with by four pinions, and while I prefer to employ four recesses, into which are fitted boxes a this number of pinions I do not desire to limit which may be secured to the disk B by screws myself in this respect, as I may employ any 40 a only two of which are shown in Fig. 2. desired number of said pinions.

The boxes (0 form loose bearings for shafts I claima upon one end of each of which is mounted 1. In an electric-motor mechanism, the coma small gear or pinion b, and on the other end bination, with an axle and a motor having its of which, at the opposite side of the disk 13, armature secured to a sleeve loosely mounted 5 is secured a large gearb. The pinions Z2 mesh on said axle, of a speed-reducing mechanism 5 witha large gear 19 made fast on the car-axle, consisting of a disk fast on said sleeve, a gear as by a key 11 and the gears b mesh with a fast on said axle, a gear loose on the armagear b which is smaller than the gear b ture-sleeve, a shaft having bearings in the The gear 17 is loose on the armature-sleeve, said disk and provided with a pinion in mesh so and the said gear is secured by a key 11 (see with the gear on the axle and with a gear in mesh with the gear loose on the armaturesleeve, a friction disk or drum loose on the armature-sleeve and secured to the gear on the armature-sleeve, a friction-strap to en- 5 gage said friction-disk, and means to engage said strap With the said friction-disk, substantially as described.

2. In an electric-motor mechanism, the combination, with an axle and a motor having its armature secured to a sleeve loosely mounted on said axle, of a speed-reducing mechanism consisting of a disk fast on said sleeve and provided with removable boxes, a gear fast on said axle, a gear loose on the armaturesleeve, a plurality of shafts having hearings in said disk and removable boxes, a pinion on each of said shafts in mesh with the gear on the axle and a gear on each of said shafts in mesh with the gear loose on the armaturesleeve, a friction disk or drum loose on the armature-sleeve and secured to the gear loose on the said armature-sleeve, and a frictionstrap to be engaged With and disengaged from said friction-disk, substantially as described. 3. In an electric-motor mechanism, the combination, with an axle and a motor having its armature secured to a sleeve loosely mounted on said axle, of a speed-reducing mechanism consisting of a disk fast on said sleeve and provided with removable boxes, a gear fast 0 on said axle, a gear loose on the armaturesleeve, a plurality of shafts having bearings in said disk and removable boxes, a pinion on each of said shafts in mesh with the gear on the axle and a gear on each of said shafts 3 5 in mesh with the gear loose on the armaturesleeve, a friction disk or drum loose on the armature-sleeve and secured to the gear loose on the said armature-sleeve, a friction-strap to be engaged with and disengaged from said 40 friction-disk, and a drum or case Z1 inclosing said speed-reducing mechanism oil and dust tight, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

SAMUEL E MOWER. Witnesses:

HENRY G. THOMPSON, L. H. DAYTON. 

